Question 1

How does a material become charged?

Accepted Answer

becomes negatively charged by gaining electrons and becomes positively charged by losing electrons

Answer

becomes negatively charged by losing protons and becomes positively charged by gaining protons

Answer

becomes negatively charged by losing protons and becomes positively charged by losing electrons

Answer

becomes negatively charged by losing electrons and becomes positively charged by gaining electrons

Question 2

What will two objects carrying the same type of charge do if they are brought close to each other?

Accepted Answer

repel each other

Answer

one attracts and one repels

Answer

do nothing to each other

Answer

attract each other

Question 3

What is the region of space around a charged object in which another charged object will experience as electrostatic force called?

Accepted Answer

an electric field

Answer

an electrostatic force area

Answer

an electric forcefield

Answer

an electric shield

Question 4

What happens to the strength of an electric field as you get further from the charged object?

Accepted Answer

it decreases

Answer

it does not change

Answer

it reverses field

Answer

it increases

Question 5

What is electric current?

Accepted Answer

rate of flow of charge

Answer

the total amount of electrons moving in a circuit

Answer

the power in a circuit

Answer

the time taken for one electron to travel around a circuit

Question 6

What are the units of charge measured in?

Accepted Answer

$	ext{coulombs (C)}$

Answer

$	ext{volts (V)}$

Answer

$	ext{amperes (A)}$

Answer

$	ext{watts (W)}$

Question 7

What are the units of current measured in?

Accepted Answer

$	ext{amperes (A)}$

Answer

$	ext{coulombs (C)}$

Answer

$	ext{watts (W)}$

Answer

$	ext{volts (V)}$

Question 8

What units of time are used to measure and calculate current?

Accepted Answer

$	ext{seconds (s)}$

Answer

$	ext{hours (hr)}$

Answer

$	ext{milliseconds (ms)}$

Answer

$	ext{minutes (min)}$

Question 9

What is the same at all points when charge flows in a closed loop?

Accepted Answer

current

Answer

resistance

Answer

potential difference

Answer

power

Question 10

What must there be in a closed circuit so that electrical charge can flow?

Accepted Answer

source of potential difference (p.d.)

Answer

an electrical component e.g. lamp

Answer

resistance

Answer

a switch

Question 11

Which two factors does current depend on and what are their units?

Accepted Answer

resistance in ohms $	ext{ohms (Ω)},$ p.d. In $	ext{volts (V)}$

Answer

resistance in $	ext{ohms (Ω)},$ p.d. In $	ext{watts (W)}$

Answer

resistance in $	ext{coulombs (C),}$ p.d. In $	ext{volts (V)}$

Answer

resistance in $	ext{amps (A)},$ power in $	ext{joules (J)}$

Question 12

What happens to the current if the resistance is increased but the p.d. stays the same?

Accepted Answer

current decreases

Answer

current does not change

Answer

current increases

Answer

current reverses

Question 13

What term is use to describe a conductor where current is directly proportional to the voltage so resistance is constant (at constant temperature)?

Accepted Answer

ohmic conductor

Answer

constant resistor

Answer

normal conductor

Answer

relative resistor

Question 14

What happens to the resistance of a filament lamp as its temperature increases?

Accepted Answer

resistance increases

Answer

resistance decreases

Answer

resistance stops the flow of charge

Answer

resistance does not change

Question 15

What happens to the resistance of a thermistor as its temperature increases?

Accepted Answer

resistance decreases

Answer

resistance increases

Answer

resistance does not change

Answer

resistance stops the flow of charge

Question 16

What happens to the resistance of a light-dependent resistor when light intensity increases?

Accepted Answer

resistance decreases

Answer

resistance stops the flow of charge

Answer

resistance increases

Answer

resistance does not change

Question 17

Which of these is NOT a feature of a series circuit?

Accepted Answer

total current through circuit is the sum of the currents in each branch

Answer

total resistance of all components is the sum of the resistance of each component

Answer

total p.d. of power supply is shared between component

Answer

same current through each component

Question 18

Which of these is NOT a feature of a parallel circuit?

Accepted Answer

total p.d. of power supply is shared between component

Answer

p.d. across each branch is the same

Answer

total current through circuit is the sum of the currents in each branch

Answer

total resistance of all resistors is less than the resistance of the smallest individual resistor

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