A double pole, double throw switch has how many points of contact?

A double pole, double throw switch has how many points of contact?

• A. 4
• B. 6
• C. 8
• D. 2

Answer: (B)

This question tests how many contact points a DPDT switch provides. DPDT means two poles, each with two possible connections (throws). Each pole has three terminals: a common and two outputs. With two poles, that’s 3 plus 3, giving six points of contact in total. That’s why the correct count is six. The other numbers don’t fit because they would correspond to different switch configurations (for example, four would be two poles with only one throw each, and eight would imply more than the standard DPDT provides).

This question tests how many contact points a DPDT switch provides. DPDT means two poles, each with two possible connections (throws). Each pole has three terminals: a common and two outputs. With two poles, that’s 3 plus 3, giving six points of contact in total. That’s why the correct count is six. The other numbers don’t fit because they would correspond to different switch configurations (for example, four would be two poles with only one throw each, and eight would imply more than the standard DPDT provides).