Ohm's Law and resistance

1

As the voltage across a resistor is increased, what happens to the resistance of the resistor?

2

What is the current in this circuit?

Circuit with a 6 V battery connected in series with a 12 ohm resistor.

3

What is the resistance of the resistor in this circuit?

Circuit with a 6 V battery connected in series with a resistor and an ammeter, which reads 0.3 A.

4

If the resistance in this circuit is halved, what will the current be?

Circuit with a 6 V battery connected in series with a resistor and an ammeter, which reads 0.3 A.

5

The diagram shows part of a circuit. What is the resistance of the resistor shown?

A resistor labelled R in series with an ammeter reading 3 A. A voltmeter connected across the resistor reads 12 V.

6

The diagram shows part of a circuit. What is the reading shown on the ammeter?

A 30-ohm resistor in series with an ammeter. A voltmeter connected across the resistor reads 9 V.

7

The diagram shows part of a circuit. What is the reading displayed on the voltmeter?

An 18-ohm resistor in series with an ammeter reading 0.3 A. A voltmeter is connected across the resistor.

8

What kind of a circuit is this?

Circuit with a battery and three 500 ohm resistors in series.

9

What is the total resistance of this circuit?

Circuit with a battery and three 500 ohm resistors in series.

10

If the supply voltage is 12V, what is the current in this circuit?

Circuit with a battery and three 500 ohm resistors in series.

11

What kind of a circuit is this?

Circuit with a battery and three 500 ohm resistors in parallel.

12

What is the total resistance of this circuit?

Circuit with a battery and three 500 ohm resistors in parallel.

13

If the current in each branch is 20mA, what is the supply voltage in this circuit?

Circuit with a battery and three 500 ohm resistors in parallel.

14

What is the resistance between X and Y?

3 parallel resistors and 3 resistors in series between X and Y