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VoltageCurrentCapacitance MCQ 2

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Questions and Answers

In a parallel plate capacitor, what separates the metal plates?

Tantalum

Ceramic

Aluminium oxide

Air (correct)

Which of the following is NOT an effect of electric currents?

Heating effects

Chemical effects

Magnetic effects

Photoelectric effects (correct)

What does an ammeter measure?

Voltage

Charge

Resistance

Electric current (correct)

What does the equation Q = CV represent?

Capacitance equation Signup and view all the answers

Which device is used to quickly cut off current in the event of a fault in an appliance?

MCB Signup and view all the answers

kWh is the unit of energy used by a 1,000-watt appliance in how long?

$1$ hour Signup and view all the answers

$Joule's$ Law indicates that heat production in an electrical circuit is proportional to what?

$I^2$ Signup and view all the answers

$Capacitors$ are capable of conducting which type of current but not the other?

$AC$ but not $DC$ Signup and view all the answers

What is the formula for work according to Joule's Law?

W = I^2Rt Signup and view all the answers

Which device is used to convert chemical or mechanical energy into electrical energy?

Primary cell Signup and view all the answers