Page 13 - Physics - XII

5. Least count of milliammeter = _____ mA

6. Least count of voltmeter = _____ V
7. Zero error in milliammeter, e = _____ mA
1
8. Zero error in voltmeter, e = _____ V
2
9. Zero correction for milliammeter, c = –e = _____ mA
1
1
10. Zero correction for voltmeter, c = –e = _____ V
2 2
11. Least count of screw gauge = _____ mm

12. Zero error of screw gauge, e = _____ mm
3
13. Zero correction for screw gauge, c = –e = _____ mm
3
3
Table for Milliammeter and Voltmeter Readings

Milliammeter Reading I(mA) Voltmeter Reading V(V)
V
3
S. No. Observed Corrected Observed Corrected R = ×10(Ohm)
I I = I + c V V = V + c I
0 0 1 0 0 2
1. ____________ ____________ ____________ ____________ ____________

2. ____________ ____________ ____________ ____________ ____________

3. ____________ ____________ ____________ ____________ ____________

Mean value of resistance, R = _____ Ω.

Table for diameter (D) of the wire 1

Circular Scale Reading Corrected
Linear Scale Observed diameter
S. Reading N No. of circular scale Value D = N + n × L.C. diameter
No. division on reference line n × (L.C.) 0 D = D + c
(mm) (mm) 0 3
(n) (mm) (mm)

(a) D (a) =
1. 1
(b) D (b) =
1
(a) D (a) =
2. 2
(b) D (b) =
2
(a) D (a) =
3. 3
(b) D (b) =
3
Mean D = _____ mm = _____ m

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