7290-457 L3 Wiring

What is the 'pressure' of electricity measured in?

• Volts

• Amps

• Ohms

• Watts

How do we work out the value of I in Ohm's law.

• Volts x Ohms

• Volts x Amps

• Ohms x Amps

Resistance is determined by

• Watts x Ohms

• Amps x Ohms

Power is measured in

• Amps

• Volts

• Ohms

• Watts

If there are 3 amps flowing through 4 ohm resistor, what would voltage be?

• 0.75 v

• 7 v

• 12 v

• 36 watts

With 12 volts in a circuit with 3 amp resistance what is the power?

• 36 Watts

• 4 Watts

• 36 Ohms

• 4 Ohms

What happens when a crrent is passed through a coil?

• It becomes an electromagnet

• It magnifies the energy to 36 v

• It reduces volts to 12v

• It opens a control circuit

Which DIN terminal is allocated the number 30?

• Ignition live

• Battery live

• Earth negative

• Starter live

What type of wires would you find on a heated rear window ?

• Thick wires

• Thin wires

• Long wires

• Short wires

How is a relay best described?

• uses a low current to switch on a high current

• uses a high current to switch on a low current

• uses high voltage to switch on a high current

• It acts a fusible link