# Learning Check - Current and Circuits

## Quiz by Michael Lynch

Science
Thailand Core Curriculum

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26 questions
• Q1

In a Series circuit, the current _________.

stays the same

splits at a branch

is shared amongst components

is given to the cell

120s
• Q2

Which of the following is NOT a good conductor?

Plastic

Copper

All of the above

Iron

120s
• Q3

In a ________________________ circuit, if one bulb burns out, the others will stay lit.

parallel

resistor

series

mixed

120s
• Q4

In order for a circuit to work, the path must be __________________.

closed

series

parallel

open

120s
• Q5

The flow of electric charge through something is a/an __________________________.

circuit tester

electric current

wire

battery

120s
• Q6

In a simple circuit, a power source of 45V can produce a current of 15 A. What is the resistance of the circuit?

0.33 $\Omega$

60 $\Omega$

90 $\Omega$

3 $\Omega$

120s
• Q7

What is the correct way to connect an ammeter to a circuit?

In series with the circuit.

In parallel with the circuit.

120s
• Q8

Does this diagram represent a series or parallel circuit?

Parallel

Series

120s
• Q9

Which of the following statements is true?

A switch only turns the current off.

Two identical bulbs in a series circuit are brighter than one.

An open switch allows a small amount of current through it.

The lower the resistance in a series circuit, the brighter the bulb.

120s
• Q10

Three identical bulbs are in parallel in a complete circuit. The current in each bulb __________.

is the same in all bulbs

is greatest in the bulb nearest the battery

is three times the current flowing from the battery

is different in all bulbs

120s
• Q11

What is the best definition of resistance?

A battery

The flow of amps.

Electric potential difference

The ability to reduce the flow of electrons

120s
• Q12

This circuit has a 24 Volt battery and the resistor is 8 Ohms. What is the current in the circuit?

12 Amps

4 Amps

2 Amps

3 Amps

120s
• Q13

If the voltage is increased and the resistance stays the same, current will _________.

Increase

Decrease

Stay the same

Double

120s
• Q14

Current is measured in ______.

Amps

Ohms

Ions

120s
• Q15

What does this circuit symbol represent?

Open switch

Variable Resistor

Motor

LED

120s

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