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