Voltage and Current Questions and Answers
Understanding Voltage and Current is fundamental to all branches of electronics. These reasoning questions and answers help candidates analyze how electrical quantities interact within circuits. Topics include Ohm’s Law, Kirchhoff’s rules, resistive circuits, and power calculations. Practicing electronics aptitude questions with explanations enhances problem-solving ability and prepares you for GATE, DRDO, ISRO, and PSU technical exams. By working on voltage and current questions with answers, aspirants can master theoretical principles and practical applications, ensuring a strong foundation in electronic circuit analysis and electrical measurements.
Voltage and Current
Showing 10 of
39 questions
1. If 60 J of energy are available for every 15 C of charge, what is the voltage?
- 4 V
- 60 V
- 15 V
- 0.25 V
2. An atom's atomic number is determined by the number of:
- neutrons minus protons
- protons
- electrons
- neutrons
3. A voltage will influence current only if the circuit is:
- open
- insulated
- high resistance
- closed
4. Which resistive component is designed to be temperature sensitive?
- Thermistor
- Rheostat
- Potentiometer
- Photoconductive cell
5. A voltmeter is used:
- to measure current
- in series with the circuit
- in parallel with the circuit
- to measure coulombs
6. If the current in a circuit equals 0 A, it is likely that the
- voltage is too high
- resistance is too low
- circuit has a short
- circuit is open
7. What are the unit and symbol for current?
- Ampere, A
- Coulomb, I
- Ampere, Q
- Ampere, I
8. Which part of an atom has no electrical charge?
- Electron
- Neutron
- Proton
- All of the above
9. Which voltage source converts chemical energy to electrical energy?
- Electrical generator
- Battery
- Solar cell
- Electronic power supply
10. An example of potential energy is:
- tea-kettle steam
- a moving vehicle
- the sun
- a battery