What quantities are related by Ohm’s law? Check all that apply.
voltage
conductivity
current
resistance
insulation
The quantities related by Ohm’s law are:
- Voltage (V)
- Current (I)
- Resistance (R)
Ohm's law, named after the German physicist Georg Simon Ohm, relates three quantities: voltage (V), current (I), and resistance (R).
According to Ohm's law, the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor.
So, among the choices given, the quantities related by Ohm's law are:
- Voltage (V)
- Current (I)
- Resistance (R)
Conductivity and insulation, on the other hand, are not directly related to Ohm's law. However, they are related to the concept of resistance. Conductivity is the inverse of resistance and represents the ease with which a material conducts electric current, while insulation refers to the resistance of a material to the flow of electric current.
The quantities related by Ohm's law are:
- Voltage
- Current
- Resistance
Conductivity and insulation are properties of materials and are not directly related to Ohm's law.
A wire with a resistance of 20 Ω is connected to a 12-V battery. What is the current flowing through the wire?
A
To calculate the current flowing through the wire, we can use Ohm's law, which states that current (I) is equal to the voltage (V) divided by the resistance (R).
In this case, the voltage (V) is 12 V and the resistance (R) is 20 Ω.
The formula for Ohm's law is:
I = V / R
Plugging in the given values, we get:
I = 12 V / 20 Ω
Simplifying the equation, we find:
I = 0.6 A
Therefore, the current flowing through the wire is 0.6 Amps.
Rory uses a battery to power a light bulb with a resistance of 10 Ω. If 0.15 A of current is flowing, what is the voltage of the battery?
V
To determine the voltage of the battery, we can use Ohm's law, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R).
In this case, the current (I) is 0.15 A and the resistance (R) is 10 Ω.
The formula for Ohm's law is:
V = I * R
Plugging in the given values, we get:
V = 0.15 A * 10 Ω
Simplifying the equation, we find:
V = 1.5 V
Therefore, the voltage of the battery is 1.5 volts.
Use the drop-down menu to answer the question.
In the equation I = V over R. , what does I stand for?