Electrical Circuits Quiz

Which statement describes current in a series circuit?

• It stays the same throughout.

• It decreases

• It splits up across each component.

• It increases.

Which of the following quantity remains in parallel circuit?

• Current and voltage

• current

• voltage

• Resistance

In a series circuit with two resistors, how does the current compare in both resistors?

• The same in both resistors

• Greater in the first resistor than in the second

• Zero in at least one resistor

• Greater in the second resistor than in the first

According to Kirchhoff's Point/Junction Rule, the sum of all the currents entering a point or junction of the circuit is _____ to the sum of all the currents leaving that point or junction.

• Less than

• greater than

• equal

• unpredictable

How much current is flowing in a wire 5.0 m long if the maximum force on it is 0.625 N when placed in a uniform 0.0900-T field?

• 1.37 A

• 1.38 A

• 1.39 A

• 1.40 A

Why is the magnetic field inside the loop stronger than the magnetic field outside?

• The magnetic field lines are concentrated outside the loop

• The magnetic field lines are concentrated inside the loop

• The magnetic field lines exist inside the loop

• The magnetic field lines exist outside the loop

Which direction, in relation to magnetic field line, can produce a zero magnetic force on a current carrying wire?

• Parallel

• Helical

• Perpendicular

• Circular

A wire that is 2.00 m long and carrying a current of 15.0 A is at 90° to a uniform magnetic field. The force acting on the wire is 0.70 N. What is the strength of the magnetic field?

• 0.01 T

• 0.02 T

• 0.03 T

• 0.04 T

If the electrical potential energy between two equal charges quadruples, describe the change in the distance between the particles.

• The distance was quartered

• The distance was halved

• The distance was doubled

• The distance was not changed

How much work is required to bring together the three given charges from infinity to the corners of an equilateral triangle of side length 1cm? (Given: k=9 x 109 N) q1=1μC, q2=2μC, q3=3μC

• 720J

• 9.9J

• 99mJ

• 7.2J