Home
Class 9
PHYSICS
A charge of 2xx10^(4)C flows through an ...

A charge of `2xx10^(4)C` flows through an electric heater. The amount of electrical energy converted into thermal energy is 5 MJ. Compute the potential difference across the ends of the heater.

Text Solution

Verified by Experts

`V= W"/"q" that is " 5xx10^(6)J"/"2xx10^(4)C= 250V`
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGE AND ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS (SHORT ANSWERS QUESTIONS)|10 Videos

  • ELECTRIC CHARGE AND ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS (LONG ANSWERS QUESTIONS)|4 Videos

  • ELECTRIC CHARGE AND ELECTRIC CURRENT

    FULL MARKS|Exercise EXERCISE-I (EXERCISES)|3 Videos

  • MEASUREMENT

    FULL MARKS|Exercise Activity|3 Videos

  • FLUIDS

    FULL MARKS|Exercise Activity|1 Videos

Similar Questions

Explore conceptually related problems

The workdone in moving 4 mu C charge from one point to another in an electric field is 0.012 J. The potential difference between them is

For the given capacitor configuration (a) Find the charges on each capacitor (b) potential difference across them ( c) energy stored in each capacitor .

A capacitance C , a resistance R and an emf (epsilon) are connected in series at t=0.What is the maximum value of (a) the potential difference across the resistor, (b) the current in the circuit,(c )the potential difference across the capacitor, (d) the energy stored in the capacitor ,(e)the power delivered by the battery and (f) the power converted int heat.

Two neutral particles are kept 1m apart. Suppose by some mechanism some charge is transferred from one particle to the other and the electric potential energy lost is completely converted into a photon. Calculate the longest and the next smaller wavelength of the photon possible. h=6.63xx10^(-34)Js .

The constant A in the Richardson-Dushman equation for tungsten is 60 xx 10^(4) A m^(-2) . The work function of tungsten is 4.5 eV . A tungsten cathode having a surface area 2.0 xx 10^(-5) m^2 is heated by a 24 W electric heater. In steady state, the heat radiated by the cathode equals the energy input by the heater and the temperature becomes constant. Assuming that the cathode radiates like a blackbody, calculate the saturation current due to thermions. Take Stefan constant = 6 xx 10^(-8) W m^(-2) K^(-4) . Assume that the thermions take only a small fraction of the heat supplied.

A charge of +2.0xx 10 ^-8 C is placed on the positive plate and a charge of -1.0xx10 ^-8 C at negative plate. And capacitance of capacitor is 1.2 xx (10^-3) mu F . Calculate the potential difference developed between the plates.