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In a simple electric circuit, a 24-ohm resistor is
connected across a 6.0-volt battery. What is the
current in the circuit?
(1) 1.0 A (3) 140 A(2) 0.25 A (4) 4.0 A
The electrical resistance of a metallic conductoris inversely proportional
to its
(1) temperature (3) cross-sectional area (2) length (4) resistivity
An operating 100.-watt lamp is
connected to a120-volt outlet. What is the total electrical
energyused by the lamp in
60. seconds?(1) 0.60 J (3) 6.0 × 103 J(2) 1.7 J (4) 7.2 × 103 J
A 3.0-ohm resistor and a 6.0-ohm resistor areconnected in series in an operating electriccircuit. If the current through the 3.0-ohmresistor is 4.0 amperes, what is the potentialdifference across the 6.0-ohm resistor?
(1) 8.0 V (3) 12 V(2) 2.0 V (4) 24 V
In which circuit would current flow through resistor R1, but not through resistor R2 while switch S is open?
A 5.0-ohm resistor, a 10.0-ohm resistor, and a 15.0-ohm resistor are connected in
parallel with a battery. The current through the 5.0-ohm resistor is 2.4 amperes.
Calculate the amount of electrical energy expended in the 5.0-ohm resistor in 2.0 minutes. [Show all work,including the equation and substitution with units.]
A 50.-ohm resistor, an unknown resistor R, a 120-volt source, and
an ammeter are connected in a
complete circuit. The ammeter reads 0.50
ampere.Calculate the equivalent resistance of the circuit. [Show all work, including the equation and substitution with units.]
Determine the resistance of resistor R.
Calculate the power dissipated by the 50.-ohm resistor. [Show all work, includingthe equation and substitution with units.]
In the space in your answer booklet, draw adiagram of an operating circuit that
includes:
• a battery as a source of potential difference• two resistors in parallel with each other• an ammeter that reads the total current in thecircuit
A 15-ohm resistor, R1, and a 30.-ohm resistor, R2, are to be connected in parallel
between points A and B in a circuit containing a 90.-volt battery.
Complete the diagram in your answer booklet to show the two resistors connected in parallel
betweenpoints A and B.