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Science

Radiation for life

Electrical circuits- higher tier - Test

1.

What is the current flowing through the 12? resistor?

2.

If the resistance in the circuit is halved the new current that flows is:

3.

What is the resistance of a kettle element if 8A flows through it when the mains voltage is 240V?

4.

A hair drier is said to be double insulated because:

5.

Which wire is connected to the fuse?