Kirchhoff's laws

Sum of e.m.f around any loop equals

• sum of current

• sum of potential difference

• sum of resistances

• sum of charges passing through it per second

Current entering and leaving a point in a circuit should be

• equal

• decreasing

• increasing

• variable

Current through each resistor when they are connected in series is

• different

• same

• decreasing

• increasing

If a billion electrons enter a point in 1 s, then number of electrons

leaving that point in 1 s are

• 2 billion

• 3 billion

• 1 billion

• 10 billion

Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their

combined resistance is given by

• 110 Ω

• 50 Ω

• 20Ω

• 10 Ω

Kirchhoff's 2nd law deals with

• current in circuit

• voltage in circuit

• e.m.f in circuit

• voltage in circuit and e.m.f in circuit

Combined resistance of 5 Ω and 10 Ω are connected in series is equal to

• 10 Ω

• 15 Ω

• 20 Ω

• 25 Ω

Two 10 Ω resistors are connected in parallel, their equivalent resistance is

• 5 Ω

• 10 Ω

• 15 Ω

• 0.5 Ω

Kirchhoff's 1st law is consequence of law of conservation of

• energy

• charge

• momentum

• power

Ammeter should always have a

• high resistance

• low resistance

• low voltage

• high voltage