1. How can a charged object attract an uncharged object made of non-conducting m

Question

1. How can a charged object attract an uncharged object made of non-conducting material? a. The uncharged object must somehow gain a like charge. b. The uncharged object must somehow gain an unlike charge. c. The charges in the uncharged object can become polarized. d. Attraction of an insulator is not possible. 2. Two capacitors with Ca greater than CB are connected in parallel with a battery. Which of the following is true? a. There is more potential difference across CA b. There is more potential difference across C c. There is the same charge stored on each capacitor. d. There is the same potential difference across both capacitors. 3. The figure shows two unequal point charges, q and 2, of opposite sign. Charge 0 has greater magnitude than charge q In which of the regions KZ will there be a point at which the net electric field due to these two charges is zero? Q has greater A) only regions Xand Z B) only region X C) only region Y D) only region Z E) all three regions 4. When the electric field is zero at a point, the potential must also be zero there. A) True B) False

Explanation / Answer

1) The charged object polarises the uncharged object,

hence option c is correct

2) In parallel potential difference across the elements is same,

option d is correct

3) since the charge is of opposite nature field cannot be zero between them(region Y)

If the field at Z would be zero this would imply that Q<q which is not true,

hence option b is correct

4) false, it only tells that potential is contant, it may or may not be zero

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