PHYSBSCIL

  Which of the following materials not being used in the experiment First law of thermodynamics?

• Electrocalorimeter

• Thermometer

• Voltmeter

• Stopwatch

• none of them

In the Equation Electrical Equivalent of Heat, the variable Q represents

• Heat

• Charge

• Calorie

• Voltage

The product of the variables: I,V, and t represents

• work

• heat

• electrical energy

• either work or electrical energy

The value of electrical equivalent of heat is

• 1.0 J/cal

• 9.8 J/cal

• 0.22 J/cal

• 4.186 J/cal

Which of the statements is not true about the electrical equivalent of heat experiment? 

• The amount of heat increases with time.

• The voltage is the cause of current

• The environment may introduce error in the experiment

• The metal that loses energy is the one that connected to the circuit

How current affected if the number of charge carriers decrease?

• the current increases

• the current decreases.

• the current initially decreases and then is gradually restored.

• the current is not affected.

What do you call to a closed, continuous path through which electrons can flow?

• conducting path

• circuit

• wire

• conducting loop

Which of the devices connects in series with the circuit?

• ohmmeter

• ammeter

• voltmeter

• power supply

It gives pressure to electron to flow in a circuit

• current

• resistance

• voltage

• electric force

Which of the devices connects in parallel with the circuit? 

• ohmmeter     

• voltmeter    

• ammeter  

• Galvanometer