Revision Quiz: Ohm Resistance

Age Range: 14-16 Year Olds

Question 1

Which has the greatest resistance, a metre of wire with 1mm, 2mm or 4mm diameter?

Question 2

Which has the greatest resistance a wire 0.5m, 1m or 2m long of the same type and thickness?

Question 3

If a piece of wire with a high resistance is connected in series with a torch bulb in a circuit what happens to the brightness of the bulb?

Question 4

Why do metals have electrical resistance?

Question 5

Ohm's law is?

Question 6

A piece of wire connected to a 6V cell has a current of 1.5A flowing through it. What is the resistance of the wire?

Question 7

A wire with a resistance of 10 Ω is connected to a 12 V supply. What is the current flowing through it?

Question 8

What is the voltage difference across a piece of wire of resistance 100 Ω with a current of 20 mA flowing through it?

Question 9

The following graph represents? electromagnet

Question 10

The following graph represents? electromagnet

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