Electricity and Magnetism

Heating the steel rod until it is red hot.

Dropping the steel rod several times from a height.

Stroking the rod repeatedly in one direction with one pole of the magnet.

Leaving the rod inside a plastic container for several days.

They will repel each other.

They will attract each other.

There will be no magnetic force between them.

They will vibrate but not move toward each other.

From the South pole to the North pole

From the North pole to the South pole

Radiating outwards from both the North and South poles

In concentric circles centered at the middle of the magnet

$0.17\ \Omega$

$6.0\ \Omega$

$24\ \Omega$

$10\ \Omega$

In parallel with the resistor

In series with the resistor

Directly across the terminals of the battery

In parallel with the voltmeter

Amperes ($A$)

Coulombs ($C$)

Volts ($V$)

Ohms ($\\Omega$)

The other lamps stay lit and become brighter.

The other lamps stay lit with the same brightness.

The other lamps stay lit but become dimmer.

All lamps go out because the circuit is broken.

$1.1\Omega$

$6\Omega$

$12\Omega$

$48\Omega$

$3\text{ V}$

$6\text{ V}$

$12\text{ V}$

$0\text{ V}$

In the Earth wire

In the Neutral wire

In the Live wire

Parallel to the appliance

The switch

The Earth wire

The fuse

The circuit breaker

To increase the voltage available to the appliance

To prevent the user from receiving an electric shock from the casing

To break the circuit if the current becomes too high, preventing fire

To reduce the amount of energy consumed by the appliance

From North pole to South pole

From South pole to North pole

In concentric circles around the center of the magnet

From the center of the magnet outwards in all directions

To increase the current for safer domestic use

To increase the voltage and decrease the current to reduce energy loss

To convert Direct Current (DC) into Alternating Current (AC)

To decrease the resistance of the transmission cables

Moving the magnet out of the coil more slowly

Using a weaker magnet

Moving the magnet into the coil more quickly

Reducing the number of turns in the solenoid

DC does not create a magnetic field

DC voltage is too low for induction to occur

A steady DC does not produce the changing magnetic flux required for induction

DC current flows too fast through the primary coil

The secondary voltage is higher than the primary voltage

The number of turns in the primary coil is greater than the secondary coil

The current in the secondary coil is always lower than the primary coil

It only works with a direct current (DC) input

$48V$

$3V$

$24V$

$120V$