2365-202 Electrical Science Mock

The SI Unit of Power is the

• The Watt

• The Volt

• The Ampere

• The Ohm

• 3V

• 5.14V

• 9V

• 12V

0.003 Amps can be expressed as

• 300 mA

• 30mA

• 3mA

• 0.3A

The SI Unit of Magnetic Flux is

• The Tesla (T)

• The Weber Wb

• The Newton (N)

• The Area (m²)

The Voltage Vx would be

• 230V

• 200V

• 60V

• 30V

I₃ in the circuit image would equal

• 1.5 A

• 10 A

• 6.67 A

• 1.75A

The total resistance of all three resistances combined would be

• 80 Ohms

• 40 Ohms

• 7.6 Ohms

• 3.65

Transpose the formula for  $R\ =\frac{\rho l}{A}$  to make A the subject

•  $A\ =\frac{\rho l}{R}$  

•  $A\ =\frac{R}{\rho l}$  

•  $A\ =\frac{\rho}{lR}$  

•  $A\ =\ \frac{l}{\rho A}$  

A cable has a resistance 0.7 Ohms and carries a load current of 13 Amps. The volt drop across the cable is

• 6 Volts

• 8 Volts

• 9.1 Volts

• 10.2 Volts

An atom that is negatively charged

• has more protons than electrons

• has more neutrons than electrons

• has more electrons than protons

• has an equal amount of electrons and protons