RRB JE Tier 2 Exam Questions and Answers (Upcoming March 2025) Verified Solutions Guaranteed A+
1. Question: In a series circuit, if one resistor is
removed, what will happen to the current?A) It will increase.B) It will decrease.C) It will remain the same.D) It will stop.
Answer: D) It will stop.
Rationale: In a series circuit, if one resistor is removed, the
path for the current is broken, and as a result, the current will stop flowing.
2. Question: Which of the following devices is used to
measure current?A) Voltmeter B) Ammeter C) Ohmmeter D) Wattmeter
Answer: B) Ammeter
Rationale: An ammeter is used to measure the flow of
electric current in a circuit, whereas a voltmeter measures 1 / 3
RRB JE Tier 2 Exam Questions and Answers (Upcoming March 2025) Verified Solutions Guaranteed A+ voltage, an ohmmeter measures resistance, and a wattmeter measures power.
- Question: The SI unit of electric charge is:
A) Coulomb B) Ampere C) Volt D) Ohm
Answer: A) Coulomb
Rationale: The SI unit of electric charge is Coulomb, and it
represents the quantity of electricity transported by a current of one ampere in one second.
4. Question: A moving coil galvanometer can be
converted into an ammeter by:
A) Connecting a high resistance in parallel B) Connecting a low resistance in parallel C) Connecting a low resistance in series D) Connecting a high resistance in series 2 / 3
RRB JE Tier 2 Exam Questions and Answers (Upcoming March 2025) Verified Solutions Guaranteed A+
Answer: C) Connecting a low resistance in series
Rationale: To convert a moving coil galvanometer into an
ammeter, a low resistance (called a shunt resistor) is connected in series so that it can handle large currents.
- Question: The color code for a 47kΩ resistor is:
A) Yellow, Violet, Orange B) Red, Green, Orange C) Green, Blue, Red D) Yellow, Violet, Brown
Answer: A) Yellow, Violet, Orange
Rationale: According to the resistor color code, yellow = 4,
violet = 7, and orange = ×10³, so the value is 47,000 ohms (47kΩ).
6. Question: In a transformer, if the primary coil has
100 turns and the secondary coil has 50 turns, what is the voltage ratio?
A) 1:2
B) 2:1
- / 3