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Chapter-03: Current Electricity

1. Current is Scalar/Vector. ……………………………………………………
……………………………………………………
……………………………………………………
2. Direction of Current ……………………………………………………
• Same as positive charge motion (T/F) ……………………………………………………
• Same as negative charge Motion (T/F) ……………………………………………………
……………………………………………………
……………………………………………………
3. q = t3 – 2t + t2 ……………………………………………………
Find current at t = 2. ……………………………………………………
……………………………………………………
……………………………………………………
4. q = t3 – 2t2 ……………………………………………………
Find Iavg in 3 seconds. ……………………………………………………
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5. ……………………………………………………
……………………………………………………
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6. Find charge flowing through conductor. ……………………………………………………
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I = 2t2 – t
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T T ………………………………..……………………
7. Find charge flown from O → 2 , 2 →T, O →
……………………………………………………
T. ……………………………………………………
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Also Find Iav in these Interval. ……………………………………………………
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……………………………………………………
8. Current in nth orbit of hydrogen like element ……………………………………………………
of atomic no. is proportional to ……………………………………………………
Z2 ……………………………………………………
(a) n2 ……………………………………………………

, (b)
𝑍2 ……………………………………………………
𝑛3 ……………………………………………………
(c)
𝑍 ……………………………………………………
𝑛
……………………………………………………
𝑍
(d) ……………………………………………………
𝑛2
……………………………………………………
……………………………………………………
9. Current density unit = __________ ……………………………………………………
……………………………………………………
Dimensions = __________ ……………………………………………………
……………………………………………………
10. A − = iˆ + ˆj − 3kˆ ……………………………………………………
……………………………………………………
J = −iˆ + 3 ˆj + 4kˆ
……………………………………………………
Find current in wire = _________
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11. ……………………………………………………
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Find total current. ……………………………………………………
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12.
……………………………………………………
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……………………………………………………
J = aebx ……………………………………………………
Find Itotal = ……………………………………………………
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13. ……………………………………………………
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(i) Electric field inside conductor = ……………………………………………………
(ii) Vd = ______ ……………………………………………………
(iii) Mobility = ______ ……………………………………………………
(iv) Relation between I & Vd = ……………………………………………………
(v) Ohm’s Law = ……………………………………………………
(vi) Resistance formula =
(vii) Parameters on which Resistance depend: ……………………………………………………
→ ……………………………………………………
→ ……………………………………………………
→ ……………………………………………………
→ ……………………………………………………

, 14. Draw graphs: ……………………………………………………
(a) ……………………………………………………
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(b) ……………………………………………………
……………………………………………………
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Which is more Resistance.
……………………………………………………
(c) ……………………………………………………
……………………………………………………
……………………………………………………
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……………………………………………………
……………………………………………………
If temp decreases which graphs is more ……………………………………………………
suitable.
(d) Draw V/I graph for ohmic Resistance.
……………………………………………………
(e) Draw V/I graph for non-ohmic Resistance. ……………………………………………………
(f) Micros copic form / Vector form of ohm’s ……………………………………………………
law. ……………………………………………………
(g) How temperature Impact Resistance. ……………………………………………………
(h) How temperature Impact Semiconductors.
……………………………………………………
………………………………..……………………
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(i) Resistance of Conductor with temperature ……………………………………………………
_________ ……………………………………………………
……………………………………………………
(j)
……………………………………………………
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15. ……………………………………………………
……………………………………………………
……………………………………………………
……………………………………………………
……………………………………………………
A1 ……………… A2 ……………………………………………………
I1 …………….… I2 ……………………………………………………
J1 ……………… J2 ……………………………………………………
E1 ….…………… E2 ……………………………………………………
Vd1 …………… Vd2 ……………………………………………………
Put = , > , sign between them. ……………………………………………………

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