Constructing Electrical and Electronic Circuits (Junior Cert Science): Quizzes

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Constructing Electrical and Electronic Circuits
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What is the formula for Ohm's Law?

V=I×RV = I \times R

A motor has resistance 2020 Ω and current 0.50.5 A. What is the voltage?

1010 V

A 1010 Ω resistor connects to a 66 V battery. What is the current?

0.60.6 A

What does a straight line through the origin on a voltage-current graph show?

Voltage is directly proportional to current

Which side of a diode connects to the negative battery terminal for current to flow?

The thick black line side

Which leg of an LED connects to the negative side of the battery?

The shorter leg

What happens to an LDR's resistance when light shines on it?

Resistance decreases

What happens to a thermistor's resistance when it is heated?

Resistance decreases

What is the formula for calculating electrical power?

P=V×IP = V \times I

A kettle uses 230230 V and draws 1010 A. What is its power?

23002300 W

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