Ohm's Law Day 1

Ohm's Law Day 1

Multiple Choice

As the length of a wire increases, what happens to the resistance?

• increases

• decreases

• stays the same

Multiple Choice

As the area of the wire increases (the wire becomes thicker), what happens to the resistance?

• increases

• decreases

• stays the same

Ohm's Law

In an electric circuit Ohm’s Law states the relationship between the current the potential difference and the resistance experienced

Example 1:

If a current of 2 A flows with a potential difference of 4 V, what is the resistance of the wire?

Multiple Choice

If a current of 2 A flows with a potential difference of 4 V, what is the resistance of the wire?

What is the potential difference?

• 4 V

• 2 A

• unknown

Multiple Choice

If a current of 2 A flows with a potential difference of 4 V, what is the resistance of the wire?

What is the current?

• 4 V

• 2 A

• unknown

Multiple Choice

If a current of 2 A flows with a potential difference of 4 V, what is the resistance of the wire?

What is the resistance?

• 4 V

• 2 A

• unknown

Example 1:

If a current of 2 A flows with a potential difference of 4 V, what is the resistance of the wire?

Example 2

If a current of 2 A flows through a wire with a resistance of 15 ohms, determine the potential difference that powers the wire.

Multiple Choice

If a current of 2 A flows through a wire with a resistance of 15 ohms, determine the potential difference that powers the wire.

What is the potential difference?

• 2 A

• 15 ohms

• unknown

Multiple Choice

If a current of 2 A flows through a wire with a resistance of 15 ohms, determine the potential difference that powers the wire.

What is the current?

• 2 A

• 15 ohms

• unknown

Multiple Choice

If a current of 2 A flows through a wire with a resistance of 15 ohms, determine the potential difference that powers the wire.

What is the resistance?

• 2 A

• 15 ohms

• unknown

Example 2

If a current of 2 A flows through a wire with a resistance of 15 ohms, determine the potential difference that powers the wire.

Example 3

How much current flows through a wire with a resistance of 30 ohms and a potential difference of 12 V?

Multiple Choice

How much current flows through a wire with a resistance of 30 ohms and a potential difference of 12 V?

What is the potential difference?

• 30 ohms

• 12 V

• unknown

Multiple Choice

How much current flows through a wire with a resistance of 30 ohms and a potential difference of 12 V?

What is the current?

• 30 ohms

• 12 V

• unknown

Multiple Choice

How much current flows through a wire with a resistance of 30 ohms and a potential difference of 12 V?

What is the resistance?

• 30 ohms

• 12 V

• unknown

Example 3

How much current flows through a wire with a resistance of 30 ohms and a potential difference of 12 V?