- AVolt meter
- ✓Newton per Coulomb
- CNewton-Coulomb
- DNewton per Volt
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A 10 ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
|
(a) 1310 W |
(b) 670 W |
(c) 810 W |
(d) 1210 W |

The two ends of a uniform conductor are joined to a cell of e.m.f. E and some internal resistance. Starting from the midpoint P of the conductor, we move in the direction of current and return to P. The potential V at every point on the path is plotted against the distance covered (x). Which of the following graphs best represents the resulting curve
|
(a) |
(b) |
(c) |
(d) |
The de-Broglie wavelength of a particle accelerated with 150 volt potential is
m. If it is accelerated by 600 volts p.d., its wavelength will be
|
(a) 0.25 Å |
(b) 0.5 Å |
(c) 1.5 Å |
(d) 2 Å |
Two spherical conductors A and B of radius a and b (b > a) are placed in air concentrically B is given charge + Q coulomb and A is grounded. The equivalent capacitance of these is
|
(a) 4π |
(b) 4 π |
(c) 4 π |
(d) 4 π |
The ionisation energy of hydrogen atom is 13.6 eV. Following Bohr's theory, the energy corresponding to a transition between the 3rd and the 4th orbit is
|
(a) 3.40 eV |
(b) 1.51 eV |
(c) 0.85 eV |
(d) 0.66 eV |