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4 a A lamp of resistance 15.12 is connected to a battery of e.m.f. 4.5V. Calculate...
1)A battery having an e.m.f. of 105 V and an internal resistance of 1 Ω is...
1)A battery having an e.m.f. of 105 V and an internal resistance of 1 Ω is connected in parallel with a d.c. generator of e.m.f. 110 V and internal resistance of 0.5 Ω to supply a load having a resistance of 8 Ω. Calculate: (a) the currents in the battery, the generator and the load; (b) the potential difference across the load. 1)b.Two batteries are connected in parallel. The e.m.f. and internal resistance of one battery are 120 V and...
The picture shows a battery connected to two wires in parallel. Both wires are made of...
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
You are analyzing a circuit with an unknown resistance connected across a battery of unknown voltage....
You are analyzing a circuit with an unknown resistance connected across a battery of unknown voltage. When you add 1010 to the resistance, the current through the circuit is reduced by 33. What is the resistance ?
1. A battery is connected to a light bulb, lighting the bulb. Where in the circuit...
1. A battery is connected to a light bulb, lighting the bulb. Where in the circuit is the current the greatest? A) inside the battery B) it's the same at all these points C) inside the light bulb filament D) between the light bulb and the negative terminal of the battery E) between the positive terminal of the battery and the light bulb 2. The emf of a battery is: A) its internal resistance B) the voltage difference it provides...
Four resistors are connected across a dc battery with voltage Vand no internal resistance, as shown...
Four resistors are connected across a dc battery with voltage Vand no internal resistance, as shown in the figure. If the current through the battery is I = 1 A, what is the voltage V? 22 www 3 92 BV 10 oov
A 12 v battery causes a current of 0.5 A through a resistor. a) what is...
A 12 v battery causes a current of 0.5 A through a resistor. a) what is the resistance of the resistor? b) What is the power output of the battery? c) How many joules of energy does the battery lose in a minute? Answer each multiple choice question (part a) and then (part b) explain in words why your answer is correct The length of a wire is doubled and the radius is doubled. By what factor does the resistance...
The figure shows the circuit of a flashing lamp, like those attached to barrels at highway...
The figure shows the circuit
of a flashing lamp, like those attached to barrels at highway
construction sites. The fluorescent lamp L (of negligible
capacitance) is connected in parallel across the capacitor C of a
RC circuit. There is a current through the lamp only when the
potential difference across it reaches the breakdown voltage VL ;
in this event, the capacitor discharges completely through the lamp
and the lamp flashes briefly. Suppose that two flashes per second
are needed....
In order to achieve less environmental pollution there is a tendency of using electric vehicles now....
In order to achieve less environmental pollution there is a tendency of using electric vehicles now. There are three major units in an an electric car as shown in the following block diagram. Battery Unit Control Unit Motor/ Generator The battery unit consists of a low voltage (12 V) battery and a high voltage (about 200 V) battery. 12 V battery is used to supply power for horn, lamps, wipers etc. High voltage battery drives the electric motor which then...
a.When two resistors RA and RB are combined in series and connected to a battery it...
a.When two resistors RA and RB are combined in series and connected to a battery it is observed that the ratio of the power dissipated in RA to that dissipated in RB is equal to 10. If this arrangement is dismantled and the same two resistors connected in parallel to the same battery, what is the ratio of the power dissipated in RA to that dissipated in RB in this new circuit? b.How much energy is converted by a 12...
A 1.5 V battery with an internal resistance of 5 Ohms is connected to a light...
A 1.5 V battery with an internal resistance of 5 Ohms is connected to a light bulb with a resistance of 20 Ohms in a simple, single-loop circuit. a) What is the current flowing in this circuit? b) What is the voltage difference across the light bulb and the internal resistor? c) Also calc the supplied power by the battery and power drops across the two resistors.
The picture shows a battery connected to two wires in parallel.
Both wires are made of the same material and are of the same
length, but the diameter of wire A is twice the diameter of wire
B.
True or False for the following:
1) The resistance of wire B is four times as large as the
resistance of wire A.
2) The power dissipated in wire A is 16 times the power
dissipated in wire B.
3) The voltage...
Four resistors are connected across a dc battery with voltage Vand no internal resistance, as shown in the figure. If the current through the battery is I = 1 A, what is the voltage V? 22 www 3 92 BV 10 oov
A 12 v battery causes a current of 0.5 A through a resistor. a) what is the resistance of the resistor? b) What is the power output of the battery? c) How many joules of energy does the battery lose in a minute? Answer each multiple choice question (part a) and then (part b) explain in words why your answer is correct The length of a wire is doubled and the radius is doubled. By what factor does the resistance...
The figure shows the circuit
of a flashing lamp, like those attached to barrels at highway
construction sites. The fluorescent lamp L (of negligible
capacitance) is connected in parallel across the capacitor C of a
RC circuit. There is a current through the lamp only when the
potential difference across it reaches the breakdown voltage VL ;
in this event, the capacitor discharges completely through the lamp
and the lamp flashes briefly. Suppose that two flashes per second
are needed....
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