Short Quiz

Question 1 of 5

CBSE Past Year 2026

An electric dipole \(\vec{P}=2qa\hat{i}\) is placed in x-y plane, centred at the origin. Let \(E_1\) and \(E_2\) be the magnitudes of electric field at a point distant \(r\;(\gg a)\) from its centre, along its axis and on its equatorial plane, respectively. Then the value of \(\frac{E_1}{E_2}\) is:

A \(\frac{1}{4}\) B \(\frac{1}{2}\) C 2 D 4

Select one option. Answers are shown after the test.

Question 2 of 5

CBSE Past Year 2026

An electron is moving with velocity \(v_{0}\) \(\hat{i}\) . If a uniform electric field \(\vec{E}\) = \(E_{0}\) \(\hat{j}\) is set up in the region, the electron will :

A describe a circular path B describe a helical path C describe a parabolic path D continue moving without any deviation

Select one option. Answers are shown after the test.

Question 3 of 5

CBSE Past Year 2026

Two point charges – Q and Q are located at points (d, 0) and (0, d) respectively, in x-y plane. The electric field \(\vec{E}\) at the origin will be :

A \(\frac{1}{4πε_{0}}\) \(\frac{\sqrt{2} Q}{d^{2}}\) (\(\hat{i}\) – \(\hat{j}\)) B \(\frac{1}{4πε_{0}}\) \(\frac{\sqrt{2} Q}{d^{2}}\) (– \(\hat{i}\) – \(\hat{j}\)) C \(\frac{1}{4πε_{0}}\) \(\frac{Q}{d^{2}}\) (\(\hat{i}\) – \(\hat{j}\)) D \(\frac{1}{4πε_{0}}\) \(\frac{Q}{d^{2}}\) (– \(\hat{i}\) – \(\hat{j}\))

Select one option. Answers are shown after the test.

Question 4 of 5

CBSE Past Year 2026

The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be :

Question image

A

\(\frac{q}{4πε_{0} l^{2}}\) pointing along MA

B

\(\frac{q}{πε_{0} l^{2}}\) pointing along AM

C

\(\frac{q}{2πε_{0} l^{2}}\) pointing along AM

D

Zero

Select one option. Answers are shown after the test.

Question 5 of 5

CBSE Past Year 2026

Two small identical metallic balls having charges q and – 2q are kept far at a separation r. They are brought in contact and then separated at distance \(\frac{r}{2}\) . Compared to the initial force F, they will now :

A attract with a force \(\frac{F}{2}\) B repel with a force \(\frac{F}{2}\) C repel with a force F D attract with a force F

Select one option. Answers are shown after the test.

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