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A Magnet and a Coil When a magnet is plunged into a coil at speed u,...
When a magnet is plunged into a coil at speed nu, as shown in the figure,...
When a magnet is plunged into a coil at speed nu, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit. If the speed of the magnet is doubled, the induced voltage is .
suppose that when you move a magnet through a boiba 40 turns at a certain speed,...
suppose that when you move a magnet through a boiba 40 turns at a certain speed, it induces an electric potential of 10 v through the coil .. if you move the same magnet through a coil 80 turns to the same speed. what voltage will be induced on the coil, assuming both coils are very compacted? a) 20 v b) 5 v c) not enough information d) 10 v
A magnet is moving away from a stationary coil with speed v, as shown in the...
A magnet is moving away from a stationary coil with speed v, as shown in the figure. What is the direction of the induced current I at resistor R connected to coil? magnet O The current is going up. There is no current at resistor R. O O The current is going down. Submit Request Answer
What is the direction of the induced magnetic field in the coil when the bar magnet is moving...
A coil is suspended around an axis which is colinear with the axis of a bar magnet.The coil is connected to a resistor with ends labeled “a” and “b”. The bar magnet moves from left to right with North and South poles labeled as in the figure. UseLenz’s law to answer the following question concerning the direction of induced currents and magnetic fields.What is the direction of the induced magnetic field in the coil when the bar magnet ismoving from...
A bar magnet induces a current in an N-turn coil as the magnet moves closer to...
A bar magnet induces a current in an N-turn coil as the
magnet moves closer to it as shown in (Figure 1) . The coil's
radius is R m, and the average induced emf across the bulb
during the time interval is ? V.
A. Find the rate of change of magnetic field
Express your answer in terms of the variables
?,
N,
R, and appropriate
constants.
Part B
Determine the induced current. Assume that R0 is the
resistance of...
All of them 11) 11) The coil of a generator is rotated twice as fast keeping...
All of them
11) 11) The coil of a generator is rotated twice as fast keeping all other factors constant. What happens to the value of the maximum induced emf? A) It is increased by a factor of 4. B) It stays the same. C) It is reduced by a factor of 2 D) It is increased by a factor of 2 E) It is reduced by a factor of 4. 12) The primary codl of a transformer has 100...
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion...
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion of coil c) Both d) None 2) When is passed through coil is there magnet a a (changing/unchanging) magnetic flux through the coil that induces an electromotive force(emf) in the coil; the incoming flux is (equal /not equal)to the outgoing flux. 3) While a magnet is moved toward the end of a solenoid, a voltage difference is induced between the two ends of the...
A magnet and a coil are oriented as shown in (Figure 1) . The magnet is...
A magnet and a coil are oriented as shown in (Figure 1) . The magnet is moved rapidly into the coil, held stationary in the coil for a short time, and then rapidly pulled back out of the coil.
Choose the correct graph of the reading of the ammeter as a function of time. The ammeter registers a positive value when current goes into the "+" terminal.
A.
B.
C.
D.
A magnet and a coil are oriented as shown...
In part III of the experiment, you will move a permanent magnet into a coil and...
In part III of the experiment, you will move a permanent magnet into a coil and measure the induced current (see Figure 29-2 in the book). If you find a positive current when you bring the north pole of the magnet closer, what do you expect to find when you pull the magnet back? a positive current. a negative current. Zero current.
. A permanent magnet is dropped south-end-down through a horizontal circular coil with a radius of...
. A permanent magnet is dropped south-end-down through a horizontal circular coil with a radius of 10 cm, having 200 turns, and a total resistance of 5π ohms. Find the magnitude and direction of the current induced in the coil when the magnet has passed through and the field through the coil is decreasing at 40 mT/s.
When a magnet is plunged into a coil at speed nu, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit. If the speed of the magnet is doubled, the induced voltage is .
A magnet is moving away from a stationary coil with speed v, as shown in the figure. What is the direction of the induced current I at resistor R connected to coil? magnet O The current is going up. There is no current at resistor R. O O The current is going down. Submit Request Answer
A bar magnet induces a current in an N-turn coil as the
magnet moves closer to it as shown in (Figure 1) . The coil's
radius is R m, and the average induced emf across the bulb
during the time interval is ? V.
A. Find the rate of change of magnetic field
Express your answer in terms of the variables
?,
N,
R, and appropriate
constants.
Part B
Determine the induced current. Assume that R0 is the
resistance of...
All of them
11) 11) The coil of a generator is rotated twice as fast keeping all other factors constant. What happens to the value of the maximum induced emf? A) It is increased by a factor of 4. B) It stays the same. C) It is reduced by a factor of 2 D) It is increased by a factor of 2 E) It is reduced by a factor of 4. 12) The primary codl of a transformer has 100...
1) Induced emf in a coil depends on a) Relative motion of magnet b) Relative motion of coil c) Both d) None 2) When is passed through coil is there magnet a a (changing/unchanging) magnetic flux through the coil that induces an electromotive force(emf) in the coil; the incoming flux is (equal /not equal)to the outgoing flux. 3) While a magnet is moved toward the end of a solenoid, a voltage difference is induced between the two ends of the...
A magnet and a coil are oriented as shown in (Figure 1) . The magnet is moved rapidly into the coil, held stationary in the coil for a short time, and then rapidly pulled back out of the coil.
Choose the correct graph of the reading of the ammeter as a function of time. The ammeter registers a positive value when current goes into the "+" terminal.
A.
B.
C.
D.
A magnet and a coil are oriented as shown...
In part III of the experiment, you will move a permanent magnet into a coil and measure the induced current (see Figure 29-2 in the book). If you find a positive current when you bring the north pole of the magnet closer, what do you expect to find when you pull the magnet back? a positive current. a negative current. Zero current.
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