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If in Fig. 12.12, R(1)=10Omega, R(2)=40O...

If in Fig. 12.12, `R_(1)=10Omega, R_(2)=40Omega, R_(3)=30Omega, R_(5)=60Omega,` and a 12 V battery is connected to the arrangemtn. Calculate (a) the total resistance in the circuit, and (b) the total current flowing in the circuit.

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`I=840W//220V=3.82A,`
and the resistance of the electric iron is
`R=V//I=220V//3.82A=57.60 Omega`
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In R_1 = 10 Omega, R_2 = 40 Omega and R_3 = 30 Omega, R_4 = 20 Omega, R_5 = 60 Omega and a 12 V battery is connected to the arrangement, calculate. (a) the total resistance and (b) the total current flowing in the circuit. .

In the circuit diagram given below five resistances of 10 Omega, 40 Omega, 30 Omega, 20 Omega and 60 Omega are connected as shown to a 12 V battery. Calculate: (a) total resistance in the circuit (b) total current flowing in the circuit.

In the circuit diagram given below, three resistors R_(1),R_(2) , and R_(3) of 5 Omega, 10 Omega and 30 Omega , respectively are connected as shown. Calculate: (a) current through each resistor. (b) total current in the circuit. (c) total resistance in the circuit.

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In the circuit shown in Fig. 4.19. R_(1)=100 Omega, R_(2)=R_(3)=50 Omega, R_(4)=75 Omega and E=4.75 V. Work out the equivalent resistance of the circuit and the current in each resistor.

(a) Resistors given as R_(1), R_(2) and R_(3) are connected in series to a battery V. Draw the circuit diagram showing the arrangement. Derive an expression for the equivalent resistance of the combination. (b) If R_(1)=10 Omega, R_(2)=20 Omega and R_(3)=30 Omega , calculate the effective resistance when they are connected in series to a battery of 6 V. Also find the current flowing in the circuit.

Figure 27-11a shows a multiloop circuit containing one ideal battery and four resistances with the following values: R_(1)=20 Omega, R_(2)=20 Omega, epsi=12V , R_(3)=30 Omega, R_(4)=8.0 Omega (a) What is the current through the battery? (b) What is the current i_(2) through R_(2)? (c) What is the current i_3" through "R_3?

In the R_(1) = 10 Omega ,R_(2) = 20 Omega, R_(3) = 40 Omega R_(4) = 80 Omega and V_(A) = 5V,V_(B) = 10V,V_(c) = 20V,V_(D) = 15V The current in the resistance R_(1) will be

NCERT-ELECTRICITY-Exercise
  1. If in Fig. 12.12, R(1)=10Omega, R(2)=40Omega, R(3)=30Omega, R(5)=60Ome...

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  2. What does an electric circuit mean ?

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  3. Define the unit of current.

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  4. Calculate the number of electrons consituting one coulomb of charge.

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  5. Name a device that helps to maintain a potential difference across a c...

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  6. What is meant by saying that the potential difference between two poin...

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  7. How much energy is given to each coulomb of charge passing through a 6...

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  8. On what factors does the resistance of a conductor depend ?

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  9. Will current flow more easily through a thick wire or a thin wire of t...

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  10. Let the resistance of an electrical component remain constant while th...

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  11. Why are coils of electric toasters and electric irons made of an alloy...

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  12. Use the data in Table 3.1 to answer the following : (a) Which among ...

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  13. Draw a schematic diagram of a circuit consisting of a battery of three...

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  14. Redraw the circuit of Q.12, putting in an ammeter to measure the curre...

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  15. Judge the equivalent resistance when the following are connected in pa...

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  16. An electric lamp of 100 Omega, a toaster of resistance 50 Omega and a ...

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  17. What are the advantages of connecting electrical devices in parallel w...

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  18. How can three resistors of resistances 2 Omega,3 Omega, and 6 Omega be...

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  19. What is : (a) the highest (b) the lowest total resistances that can b...

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  20. Why does the cord of an electric heater not glow while the heating ele...

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  21. Compute the heat generated while transferring 96000 coulombs of charge...

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