Chapter 23
The current through a 10-ohm resistor connected to a 120-V power supply is
12 A
The electric power of a lamp that carries 2 A at 120 V is
240 Watts
When a 10-V battery is connected to a resistor, the current in the resistor is 2 A. What is the resistor's value?
5 Ohms
A coulomb of charge that passes through a 6-volt battery is given
6 Joules
Which statement is correct?
Charge flows in a closed circuit
A 10-ohm resistor has a 5-A current in it. What is the voltage across the resistor?
More than 20 V
In an electric circuit, the safety fuse is connected to the circuit in
Series
Electrons are made to flow in a wire when there is
a potential difference across its ends
An ampere is a unit of electrical
current
Alternating current is normally produced by a
generator
Stretch a copper wire so that it is thinner and the resistance between its ends
increases
When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is
less than the resistance of either lamp
When two lamps are connected in series to a battery, the electrical resistance that the battery senses is
more than the resistance of either lamp