The figure shows the Efield in the plane of two point charge

The figure shows the E-field in the plane of two point charges. Decide which of the following statement are true, and which are false. (For each statement select T True, F False).

A) An electron placed at `c\' would move left.

B) A proton placed at `a\' would move left.

C) The magnitude of E is the same at `a\' and `b\'.

D) Q1 and Q2 have the same sign.

E) Q1 is positive.

Solution

From line of forces Q1 is positive and Q2 is negative charge.

Since the line of forces starts from Q1 and ends on Q2.

A) An electron placed at `c\' would move left ( true)

Since the electron at c repulsed with Q2

B) A proton placed at `a\' would move left (true)

Since the proton at a repulsed with Q1 and attracted with Q2

C) The magnitude of E is the same at `a\' and `b\' (False)

D) Q1 and Q2 have the same sign (false)

E) Q1 is positive(true)