four identical resistors, p, q, r and s are connected as shown. in which of the resistors is the...
TRANSCRIPT
Four identical resistors, P, Q, R and S are connected as shown.
In which of the resistors is the current the same?
1. P and Q only2. R and S only3. P, R and S only4. Q, R and S only5. P, Q, R and S
Q
RS
P
+ -
Which of the following is the unit of electrical current?
1. joule
2. volt
3. ampere
4. watt
5. coulomb
Which of the following is the circuit symbol for a fuse?
1
2
3
4
5
In the circuit shown, the current in the 2 ohm resistor is 1 ampere.
What is the current taken from the battery?1. 0.4 ampere2. 1 ampere3. 2 amperes4. 3 amperes5. 5 amperes
2 ohms 3 ohms
The insulation on the wires in a mains flex is colour coded. Which of the following correctly identifies the live, neutral and earth wires?
Live Earth Neutral
1 blue green/yellow brown
2 green/yellow brown blue
3 blue brown green/yellow
4 brown green/yellow blue
5 brown blue green/yellow
The voltage of the supply is
1. 2 volts2. 4 volts3. 6 volts4. 10 volts5. 32 volts
supply
M
4V 4V 2V
The symbol below is sometimes seen on the rating plates of appliances.
This tells you the appliance
1. operates from 440V
2. does not require a live wire
3. does not require an earth wire
4. has a poisonous casing
5. does not need a fuse
Which of the following correctly lists the units of current and resistance?
Current Resistance
1 watt ohm
2 ampere ohm
3 ohm ampere
4 ohm watt
5 ampere watt
The kilowatt-hour is a unit of
1. voltage
2. current
3. power
4. energy
5. charge
1. A…