What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms?
1.8 amps
45 amps
0.022 amps
8.8 amps
Q.2.
The force or push that causes electric charges to move is called ______ .
resistance
voltage difference
static electricity
current
Q.3.
Electric charges always flow from _____ areas to _____ areas.
positive; negative
negative; positive
neutral; negative
neutral; positive
Q.4.
A material through which electrons do NOT flow easily is a(n) ______.
insulator
conductor
fuse
circuit breaker
Q.5.
Which of the following statements about electric charge is true?
Objects must be touching on another to exert electrical force.
Electrical forces act at a distance.
Air cannot conduct electricity; it is conducted only by solid materials.
Opposite electric charges always repel one another.
Q.6.
Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?
plastic plate
silver spoon
copper wire
gold necklace
Q.7.
Which two areas of physical science are closely related to the development of electric motors and generators?
sound and light
electricity and sound
light and magnetism
electricity and magnetism
Q.8.
Which of the following will decrease the strength of the magnetic field around a wire?
increasing the current flowing through the wire
using less loops around the iron core
flipping the direction of the current flowing through the wire
using a larger iron core
Q.9.
Silver has a resistance of 0.ohms. What voltage would produce a current ofamps?
1.98 V
0.000198 V
5050 V
100.0198 V
Q.10.
This contains a piece of metal that melts if it gets too hot in order to open a circuit.
conductor
insulator
fuse
circuit breaker
Q.11.
The function of a generator is to change ______
chemical energy to electrical energy
electrical energy to chemical energy
mechanical energy to electrical energy
electrical energy to mechanical energy
Q.12.
This exerts a force that causes other electric charges to move.
electrical poles
electrical fields
insulators
conductors
Q.13.
Which circuit below contains the greatest voltage?
A circuit with a current of 20 amps and a resistance of 16 ohms
A circuit with a current of 10 amps and a resistance of 10 ohms
A circuit with a current of 25 amps and a resistance of 16 ohms
A circuit with a current of 20 amps and a resistance of 10 ohms
Q.14.
What would happen if in a circuit, the resistance increases but the voltage stays the same?
The current would decrease
The current would increase
The voltage would decrease
The voltage would increase
Q.15.
How do you calculate voltage?
Current X Resistance
Resistance ÷ Current
Current ÷ Resistance
Measure it with a ruler
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.