Understanding Electrical Power Basics

• Voltage

• Current

• Power

• Resistance

Answer explanation

In the equation P = VI, P represents Power, which is the product of Voltage (V) and Current (I). Therefore, the correct choice is Power.

• 5 watts

• 12 watts

• 20 watts

• 22 watts

Answer explanation

To find power (P), use the formula P = VI. Here, V = 10 volts and I = 2 amperes. Thus, P = 10 * 2 = 20 watts. The correct answer is 20 watts.

• Volts

• Amperes

• Watts

• Ohms

Answer explanation

In the equation P = VI, P represents power in watts, V is voltage in volts, and I is current. The unit of measurement for current (I) is Amperes, making it the correct choice among the options provided.

• 5 amperes

• 10 amperes

• 15 amperes

• 20 amperes

Answer explanation

Using the formula P = VI, we can rearrange it to find I: I = P/V. Substituting the values, I = 50W / 5V = 10A. Therefore, the current is 10 amperes.

• Volts

• Amperes

• Watts

• Ohms

Answer explanation

In the equation P = VI, P represents power, which is measured in Watts. Volts measure voltage, Amperes measure current, and Ohms measure resistance, making Watts the correct unit for power.

Tags

NGSS.HS-PS2-5

• 5 volts

• 8 volts

• 10 volts

• 12 volts

Answer explanation

Using the formula P = VI, we can rearrange it to find V: V = P/I. Substituting the values, V = 40W / 4A = 10V. Therefore, the correct answer is 10 volts.

• Voltage

• Current

• Power

• Resistance

Answer explanation

In the equation P = VI, V represents voltage. This formula relates power (P) to voltage (V) and current (I), indicating that power is the product of voltage and current.

• 2 amperes

• 3 amperes

• 4 amperes

• 5 amperes

Answer explanation

Using the formula P = VI, we can rearrange it to find I: I = P/V. Substituting the values, I = 36W / 12V = 3A. Therefore, the current is 3 amperes.

• Power is the product of voltage and current

• Power is the sum of voltage and current

• Power is the difference between voltage and current

• Power is the ratio of voltage to current

Answer explanation

The equation P = VI shows that power (P) is calculated by multiplying voltage (V) and current (I). Therefore, the correct relationship is that power is the product of voltage and current.

• 15 volts

• 20 volts

• 25 volts

• 30 volts

Answer explanation

Using the formula P = VI, we can rearrange it to find V: V = P/I. Substituting the values, V = 100 watts / 5 amperes = 20 volts. Therefore, the correct answer is 20 volts.