RRB/SSC JE Electrical 2019 || Previous Year Questions

Which one of the following statement is TRUE about Kirchhoff’s current law?

What will be the value of current (in A) drawn from a 4 V battery when a wire of 20 ohms resistance is stretched to double its original length and then cut into two equal parts and these equal parts are connected in parallel with the battery?

Determine the heat dissipated (in Joule) through a conductor of 10 ohms resistance, when 1 A of current is flowing through the conductor for 5 seconds.

What will be the color-coding of a resistor when the resistance of the resistor is 50 + 2% ohms?

Determine the resistance (in ohms) of a 14 m long circular wire when the diameter and the conductivity of the wire are 0.6 m and 12 mho/metre respectively.