Homework Answers
Solution- the current is going up
According to lenz law an induced current always flows in a direction such that it opposes the change which produced it.
Here the N pole of the magnet is moving away from the coil therefore to oppose the the motion upper end of the coil becomes S pole and the lower end becomes N pole thus the induced current flow (by right hand thumb rule) through the resistor is upward
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A magnet is moving away from a stationary coil with speed v, as shown in the...
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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 Magnet and a Coil When a magnet is plunged into a coil at speed u,...
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A bar magnet induces a current in an N-turn coil as the
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A solenoid is wound as shown in the figure. a. Is there an induced current as...
A solenoid is wound as shown in the figure.
a. Is there an induced current as magnet 1 is moved away from the
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R?
b. Is there an induced current as magnet 2 is moved away from the
solenoid? If so, what is the current direction through resistor
R?
S 2 N N SI CCCCCCCC min 1
A Magnet and a Coil When a magnet is plunged into a coil at speed u, as shown in the figure, a voltage is induced in the coil and a current flows in the circuit (Figure 1) Part B The same magnetis plunged into a coil that has twice the number of turns as before. The magnet is shown before it enters the coil in the figure (Figure 2 the magnetis again the induced current in the coil is the speed of
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(c) A magnet...
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 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
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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...
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S 2 N N SI CCCCCCCC min 1
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