Test (1) Revision

If the Current (I) and the Voltage (V) are given, to calculate the Power (P):

• $P\ =\ I\ \times V$

• $P\ =\ \frac{V}{I}$

• $P\ =\ \frac{I}{V}$

• $P\ =\ I\ +V$

If the Current (I) and the Resistance (R) are given, to calculate the Power (P):

•  $P\ =\ I\ \times R^2$  
  

•  $P\ =\ I^2\ \times\ R$  
  

•  $P\ =\ \frac{I^2}{R}$  
  

•  $P\ =\ \frac{R^2}{I}$  
  

If the Voltage (V) and the Resistance (R) are given, to calculate the Power (P):

•  $P\ =\ V\ \times\ R^2$  
  

•  $P\ =\ V^2\ \times\ R$  
  

•  $P\ =\ \frac{V^2}{R}$  
  

•  $P\ =\ \frac{R^2}{V}$  
  

If the resistance of an electric bulb is 500 Ω and the voltage across its ends is 250 V. Find the Power.

• 120 W

• 125 W

• 130 W

• 200 W

A current of 4 A flows through a 20 V car headlight bulb. Calculate the Power.

• 60 W

• 70 W

• 80 W

• 90 W

Calculate the Power of an electrical appliance in which 10 A of current is flowing through a resistor of 2 Ω.

• 50 W

• 100 W

• 150 W

• 200 W

A pool heater running on 150 v and draws a current of 30 A. How much Energy does it use for 9 hours?

• 30,000 WH

• 30,500 WH

• 40,000 WH

• 40,500 WH

What is the name of the device shown in the picture?

• Analog Ammeter

• Analog Multimeter

• Analog Ohmmeter

• Analog Voltmeter

What is the name of the device shown in the picture?

• Digital Ammeter

• Digital Multimeter

• Digital Ohmmeter

• Digital Voltmeter

What is the name of the device shown in the picture?

• Analog Ammeter

• Analog Multimeter

• Analog Ohmmeter

• Analog Voltmeter