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Ohm's law
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Which of the following increases when resistance increases, assuming constant voltage?
 
Heat generated
 
Current
 
Power
 
Volts
A circuit has a voltage of 10V and a resistance of 5Ω. What is the current?
 
2A
 
5A
 
10A
 
0.5A
What is the current in a circuit with 24V and 8Ω of resistance?
 
3A
 
4A
 
2A
 
6A
A circuit has a resistance of 6 ohms and a current of 2A. What is the voltage?
 
12V
 
8V
 
3V
 
18V
In the equation V = IR, what does “I” stand for?
 
Current
 
Inductance
 
Impedance
 
Ion flow
Which equation is a rearranged form of Ohm's Law to find resistance?
 
R = V / I
 
R = VI
 
R = I / V
 
R = V Ă— I
If you increase resistance in a circuit but keep voltage the same, what will happen to current?
 
It will decrease
 
It will increase
 
It will stay the same
 
It will become infinite
What does the symbol Ω stand for?
 
Ohms
 
Amps
 
Volts
 
Watts
A wire with high resistance will allow:
 
Less current to flow
 
More current to flow
 
Unlimited current to flow
 
No current to flow
What happens to the current if voltage doubles and resistance stays the same?
 
Current doubles
 
Current halves
 
Resistance doubles
 
Voltage stays constant
Which of these is NOT part of Ohm's Law?
 
Power
 
Current
 
Voltage
 
Resistance
Who is Ohm’s Law named after?
 
Georg Simon Ohm
 
Isaac Newton
 
Thomas Edison
 
Albert Einstein
If a circuit has 10V and 2A, what is the resistance?
 
5 ohms
 
50 Ω
 
20 ohms
 
0.2 ohms
What unit is used for measuring current?
 
Amperes
 
Volts
 
Watts
 
Ohms
What happens to current if resistance increases and voltage stays the same?
 
Current decreases
 
Current increases
 
Voltage increases
 
Nothing changes
Resistance is measured in:
 
Ohms
 
Amperes
 
Volts
 
Watts
If V = 12V and R = 4Ω, what is the current (I)?
 
3A
 
2A
 
4A
 
6A
What does the symbol “V” represent in Ohm’s Law?
 
Voltage
 
Volume
 
Velocity
 
Vacuum
What is the formula for Ohm’s Law?
 
V = IR
 
P = IV
 
V = IR²
 
I = VR
What does Ohm’s Law describe?
 
The relationship between voltage, current, and resistanc
 
Gravity and motion
 
The behavior of magnets
 
The energy in a chemical reaction
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