Ohm's Law
1. An electrical circuit is a closed loop containing a(n) _____.
-conducting material -energy supply -load
4. Ohm's law can calculate the _____ of a circuit.
-current -potential difference -resistance
6. A digital multimeter measures _____.
-current -voltage -resistance
2. A _____ is a source of load in a circuit.
-light bulb -resistor -rheostat
5. Ohm's law can be demonstrated by _____ of a simple circuit.
-measuring current -measuring the potential difference -varying the energy source
10. A circuit has a potential difference of 2.50 V and a current of 0.050 A. The resistance of the circuit is _____ Ω.
50.0
Provides a pathway for charges to travel in a circuit
Conducting material
A measure of the rate of flow of charges past a point in a circuit
Current
A device used to measure two or more electrical values
Digital multimeter
T/F
F-Current in a circuit is directly proportional to resistance
T/F
F-an ammeter is used to measure potential difference
5. When measuring current, a device with high internal resistance is connected in series within a circuit.
False
9. Adding batteries to a simple circuit increases the resistance of the circuit.
False
A measure of the hindrance of flow for charges in a circuit
Resistance
T/F
T- Ohm's law describes the relationship between current, potential difference, and resistance
T/F
T-A digital multimeter can function as an ammeter and voltmeter
3. Ohm's law states that current and potential difference are directly proportional in a circuit.
True
4. Ohm's law is expressed using the equation _____.
V=I x R
8. _____ is measured by touching the leads of a multimeter to each side of a battery in a simple circuit.
Voltage
A measure of the potential difference across a circuit component
Voltage
2. The measurement of current in a circuit is expressed in _____.
amperes
7. Jumper cables function as a(n) _____ in a simple circuit.
conducting pathway
1. Charges travel from low potential energy to high potential energy in the _____ of a closed circuit.
energy supply
3. Potential difference within a circuit is expressed in _____.
volts
