Transcript Ohm`s Law and Circuits

Ohm’s Law and Circuits
(Answers on final slide)
1. The rate of charge flow in a
circuit is known as …
A.
B.
C.
D.
E.
Resistance
Voltage
Current
Power
Electrical Energy
2. The potential difference between
the ends of a wire that is required for
current to flow is known as the…
A.
B.
C.
D.
E.
Resistance
Voltage
Current
Power
Electrical Energy
3. The opposition to current flow is
called…
A.
B.
C.
D.
E.
Resistance
Voltage
Current
Power
Electrical Energy
4. Which of these statements are
true about electric current?
Choose all that apply.
A.
B.
C.
D.
E.
F.
G.
H.
The rate of charge flow
Measured in Ohms
Inversely related to resistance
Measured in Amperes
Requires an open circuit to flow
Requires a potential difference to flow
All of these statements are true
None of these statements are true.
5. Which of the following are
factors that affect resistance in a
wire? Choose all that apply.
A.
B.
C.
D.
E.
F.
G.
material
temperature
length
diameter
current flow
All of the above
None of the above
6. Which statements are true for a series
circuit? Choose all that apply.
A. Voltage is the same across all parts
B. Current is the same across all parts
C. Total resistance is the sum of the individual
resistors
D. Individual currents add to equal the total
current through the system
E. Individual voltages add to equal the total
voltage put into the system
F. There is only one path for current to flow
7. Which statements are true for a parallel
circuit? Choose all that apply.
A. Voltage is the same across all parts
B. Current is the same across all parts
C. Total resistance is the sum of the individual
resistors
D. Individual currents add to equal the total
current through the system
E. Individual voltages add to equal the total
voltage put into the system
F. There are branches of current
A.
B.
C.
D.
E.
F.
8. Electrical energy can be
measured in…(Choose all that
apply)
Watts
Ohms
Joules
Kilowatt-hours
Watt seconds
Volts
9. The relationship between
current, voltage, and resistance in
a circuit is known as…
A.
B.
C.
D.
Coulomb’s Law
Kirchoff’s Law
Ampere’s Law
Ohm’s Law
10. If you build
circuit A and then
add a resistor as in
circuit B, the light
will
A
A. Look brighter
B. Look less bright
C. There will no change in
brightness
B
11. Which shows the correct way to
use an ammeter?
A
B
12. Which resistor
will have the
greatest current?
50 
B. 10 
C. They have the
same current
A.
13. Which resistor
will have the
greatest voltage?
50 
B. 10 
C. They have the
same voltage
A.
14. Which resistor
will have the
greatest current?
50 
B. 10 
C. They have the
same current
A.
15. What is the
total resistance in
this circuit?
A. 6.4 
B. 21 
C. 38 
D. 75 
16. What is the
total resistance in
this circuit?
A. 6.4 
B. 21 
C. 38 
D. 75 
Answers
1.
2.
3.
4.
5.
6.
7.
8.
C
B
A
ACDF
ABCD
BCEF
ADF
CDE
9. D
10. B
11. B
12. B
13. C
14. C
15. C
16. B