## Units and Measurement Questions and Answers Part-4

1. The unit of reduction factor of tangent galvanometer is
a) Ampere
b) Gauss
d) None of these

Explanation: Ampere

2. The unit of self inductance of a coil is
b) Henry
c) Weber
d) Tesla

Explanation:

3. Henry/ohm can be expressed in
a) Second
b) Coulomb
c) Mho
d) Metre

Explanation:

4. The SI unit of momentum is
a) $\frac{kg}{m}$
b) $\frac{kg.m}{sec}$
c) $\frac{kg.m^{2}}{sec}$
d) $kg\times Newton$

Explanation:

5. The velocity of a particle depends upon as $v=a+bt+ct^{2}$   ; if the velocity is in m/sec , the unit of a will be
a) $m\diagup sec$
b) $m\diagup sec^{2}$
c) $m^{2}\diagup sec$
d) $m\diagup sec^{3}$

Explanation: Quantities of similar dimensions can be added or subtracted so unit of a will be same as that of velocity

6. One million electron volt $\left(1MeV\right)$  is equal to
a) $10^{5}eV$
b) $10^{6}eV$
c) $10^{4}eV$
d) $10^{7}eV$

Explanation: 1 MeV = 106 eV

7. $Erg - m^{-1}$   can be the unit of measure for
a) Force
b) Momentum
c) Power
d) Acceleration

Explanation:

8. The unit of potential energy is
a) $g\left(cm\diagup sec^{2}\right)$
b) $g\left(cm\diagup sec\right)^{2}$
c) $g\left(cm^{2}\diagup sec\right)$
d) $g\left(cm\diagup sec\right)$

Explanation:

9. Which of the following represents a volt
a) Joule/second
b) Watt/Ampere
c) Watt/Coulomb
d) Coulomb/Joule