Question Description
Three resistors 1 Ω, 2 Ω and 3 Ω are connected in series with a 6 V battery. What is the current in each resistor?
1A
0.5 A
2A
3A
When two resistors are connected in parallel,
the current in each is the same
the voltage across each is the same
both must have the same resistance
the equivalent resistance equals the sum of two resistances
A device has a resistance of 50 Ω. If the current flowing through it is 2.2 A, what is the potential difference across the device?
22.7 V
120 V
11 V
110 V
Three resistors 1 Ω, 2 Ω and 3 Ω are connected in series with a 6 V battery. What is the potential difference across 3Ω resistor?
1 V
2 V
3 V
6 V
Three resistors 2.5 Ω, 3.5 Ω and 4 Ω are connected in parallel. What is the equivalent resistance?
0.94 Ω
9.4 Ω
1.1 Ω
10 Ω
Three resistors 1 Ω, 2 Ω, and 3 Ω are connected in series with a 6 V battery. What will be the equivalent resistance and current in the circuit?
0.5 Ω;13 A
0.5 Ω; 1 A
6.0 Ω; 13 A
6.0 Ω; 1 A
A series combination of two resistors of resistance 12 Ω and 8 Ω is connected across a source of emf 24 V. What is the potential difference across 8 Ω resistors?
9.6 V
14.4 V
20 V
24 V
Several light bulbs each of resistance 1.25 Ω are connected in series across a 115 V power supply. If the current through the circuit is 2 A, what is the number of light bulbs in the circuit?
57
46
115
58
Two resistors of resistances 6 Ω and 12 Ω are connected in parallel across a 6 V battery. What is the equivalent resistance and total current in the circuit?
4 Ω; 1.5 A
18 Ω; 1.5 A
18 Ω; 0.34 A
4 Ω; 0.7 A
Three resistors of resistances 2 Ω, 4 Ω, and 6 Ω are connected in parallel across a 12 V battery. What is the total current in the circuit?
0.75 A
11A
7.5A
1.1A
Define drift velocity.
State Ohm's Law.
Distinguish between ohmic and non-ohmic resistances.
What is a source of emf?
How does current change for resistors in series? What is the equivalent resistance for resistors in series?
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