Question

1)What is the current in a 160V circuit if the resistance is 2Ω?
What is the current in a 160V circuit if the resistance is 20Ω? (1)
3. What is the current in a 160V circuit if the resistance is 10Ω? (1)
4. Based on questions 2, 3, and 4, what happens to the current in a circuit as the resistance decreases? Increases?
5. What voltage is required to move 6A through 5Ω?
7. What voltage is required to move 6A through 10Ω?
8. What voltage is required to move 6A through 20Ω?

Answer 1

Answer:

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Answer 2

Question: What is the current in a 160V circuit if the resistance is 2Ω?

Answer:

Voltage ( V ) = 160V

Resistance ( R ) = 2Ω

Current ( I ) = ?

By Ohms law

⇒ V = IR

⇒ 160 = I × 2

⇒ I = 160 / 2 = 80A

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Question: What is the current in a 160V circuit if the resistance is 20Ω?

Answer:

Voltage ( V ) = 160V

Resistance ( R ) = 20Ω

Current ( I ) = ?

By Ohms law

⇒ V = IR

⇒ 160 = I × 20

⇒ I = 160 / 20 = 8A

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Question: What is the current in a 160V circuit if the resistance is 10Ω?

Answer:

Voltage ( V ) = 160V

Resistance ( R ) = 10Ω

Current ( I ) = ?

By Ohms law

⇒ V = IR

⇒ 160 = I × 10

⇒ I = 160 / 10 = 16A

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Question: Based on questions 2, 3, and 4, what happens to the current in a circuit as the resistance decreases? Increases?

Answer:

From ohms law

⇒ I = V / R

If we take Voltage as proportionality constant

⇒ I ∝ 1 / R

So, we can conclude that current is inversely proportional to resistance.

From 2, 3, 4 questions we can conclude that,

If resistance increases, current decreases and when resistance decreases, current increases.

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Question: What voltage is required to move 6A through 5Ω?

Answer:

Resistance ( R ) = 5Ω

Current ( I ) = 6A

Voltage ( V ) = ?

By Ohms law

⇒ V = IR

⇒ V = 6 × 5

⇒ V = 30V

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Question: What voltage is required to move 6A through 10Ω?

Answer:

Resistance ( R ) = 10Ω

Current ( I ) = 6A

Voltage ( V ) = ?

By Ohms law

⇒ V = IR

⇒ V = 6 × 10

⇒ V = 60V

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Question:What voltage is required to move 6A through 20Ω?

Answer:

Resistance ( R ) = 20Ω

Current ( I ) = 6A

Voltage ( V ) = ?

By Ohms law

⇒ V = IR

⇒ V = 6 × 20

⇒ V = 120V

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