Resistors in Parallel

Q. Calculate the resistance between the points X and Y in the network shown below.

[4 MARKS]

Q.

Question 11
Show how you would connect three resistors, each of resistance 6Ω, so that the combination has a resistance of
(i) 9Ω?

Q. A coil has an inductance of 0.7 H and is joined in series with a resistance of 220 ohm.When an alternating e.m.f. of 220 V at 50 cps is applied to it, then the wattless component of the current in the circuit is- n nta. 5A n ntb. 0.5A n ntc. 0.7A n ntd. 7A

Q. In the circuit diagram shown below, three resistors of resistance $1\Omega ,2\Omega and3\Omega$ are connected to a cell of EMF 2V and internal resistance $0.5\Omega$.

(a) Calculate the total resistance of the circuit.
(b) What is the reading of the ammeter?
(c) What will be the ammeter reading if an exactly similar cell is connected in series with the given cell?
[5 MARKS]

Q. Calculate the effective resistance of the following electric circuit.

1. $\frac{3}{19}\Omega$
2. $\frac{11}{26}\Omega$
3. $\frac{15}{28}\Omega$
4. $\frac{7}{23}\Omega$

Q. Find the equivalent resistance between the points $A$ and $B$.

1. $1.5\Omega$
2. $3\Omega$
3. $5\Omega$
4. $15\Omega$

Q. 24. Two identical coaxial coils P and Q carrying equal amount of current in the same direction are brought nearer. The current in (a)P increases while in Q decreases (b)Q increases while in P decreases (c)both P and Q increases (d) both Pand Q decreases

Q. WHAT IS POTENTIAL METHOD TO FIND EQUIVALENT RESISTANCE

Q.

Two resistors $R_1$ and $R_2$ are joined in series. Find the equivalent resistance.

Q.

The equivalent resistance between A and B is:

1. 0.5

2. 2

3. 1

4. 4

Q.

Resistors $R_1$, $R_2$ and $R_3$ having values 5$\Omega$, 10$\Omega$, and 30$\Omega$ respectively are connected in parallel across a battery of 12V. Calculate [3 MARKS]

(a) the current through each resistor

(b) the total current in the circuit and

(c) the total circuit resistance.

Q. Question 4 (b)
How can three resistors of resistances 2 Ω, 3 Ω and 6 Ω be connected to give a total resistance of
(b) 1 $\Omega$ ?

Q. Th net resistance of two resistors when connected in series is 4.5 $\Omega$ and 1 $\Omega$ in parallel. The value of resistors are $\Omega$.

1. 3 and 6
2. 1.5 and 3
3. 1.5 and 0.5

Q. A potentiometer wire of length 100 cm has a resistance of 10 ohm.It is connected in a series with a resistance and accumulator of EMF 2V and negligible internal resistance .A source of EMF 10 mV is balanced against a length of 40 cm of the potentiometer wire.What is the value of the external resistsnce?

Q.

What is the formula for the combination of resistances when they are combined in series and parallel? [2 MARKS]

Q. Six equal resistance of $1\Omega$ each are connceted to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves at D.

1. $1\Omega$
2. $1.5\Omega$
3. $2\Omega$
4. $2.5\Omega$

Q. a current is flowing in a circuit a resistance is reached in parallel in this the current divide is its potential same in both way of resistance if yes then why

Q.

A resistor of 8 $\Omega$ is connected in parallel with another resistor X. The resulting resistance of the combination is 4.8 $\Omega$. What is the value of the resistor X?

Q. We have 2 ohm resistors. Sort the combinations in increasing order of their combined resistances.

1. 5 in series
2. 4 in series
3. 4 in parallel
4. 8 in parallel
5. 10 in parallel

Q. The current I in the circuit shown in figure is

1. 
2. 
3. 
4. 

Q. In a parallel connection, the current has path(s).

1. multiple
2. single
3. no

Q. Why do resistors connected in parallel have equal potential differences?

Q.

Two resistances $R_1$ and $R_2$ give a combined resistance of 4.5 $\Omega$ when in series and 1 $\Omega$ when in parallel. The value of resistances are

1. 3 Ω, 6 Ω

2. 3 Ω, 9 Ω

3. 1.5 Ω, 3 Ω

4. 1.5 Ω, 0.5 Ω

Q. In a parallel connection, the current has ______ path(s).

1. multiple
2. no
3. reverse
4. single

Q. In a parallel connection, the current has path(s).

1. multiple
2. single
3. no

Q.

If four resistors, each of the value 0.5 ohm are connected in series, then the total resistance of the circuit is

1. 4 Ω

2. 0.125 Ω

3. 2 Ω

4. 5 Ω

Q. Why does Potential Difference remain Constant when resistors are connected in a parallel way

Q. Express which of the following setups can be used to verify Ohm’s law

1. a
2. b
3. c
4. d

Q.

In parallel combination, the total resistance of the circuit becomes ___the individual resistances.

1. either less than or more than

2. equal to

3. more than

4. less than

Q. Resistors have different potential difference when connected in parallel.

1. True
2. False