A cooking apparatus comprising: a top plate including a first cooking region and a second cooking region on which a cooking vessel is seated; a first heating portion heating a portion of the cooking vessel seated on the first cooking region; a second heating portion heating a portion of the cooking vessel seated on the second cooking region; a first sensing portion sensing whether the cooking vessel is seated on the first cooking region; a second sensing portion sensing whether the cooking vessel is seated on the second cooking region; and a controlling portion controlling operations of the first heating portion and the second heating portion, according to whether the first sensing portion and the second sensing portion sense whether the cooking vessel is seated on the first cooking region and the second cooking region, wherein the first sensing portion and the second sensing portion respectively output a signal with a voltage, the voltages being inversely proportional according to an area of the cooking vessel seated on the first cooking region and/or the second cooking region, characterized in that the cooking apparatus further comprising a synthesizer to combine the signals output from the first sensing portion and the second sensing portion, and to output a signal with an amplified voltage difference of the signals output from the first sensing portion and the second sensing portion to the controlling portion, wherein the controlling portion is configured to control operations of the first heating portion and the second heating portion based on the signal with the amplified voltage difference. a top plate including a first cooking region and a second cooking region on which a cooking vessel is seated; a first heating portion heating a portion of the cooking vessel seated on the first cooking region; a second heating portion heating a portion of the cooking vessel seated on the second cooking region; a first sensing portion sensing whether the cooking vessel is seated on the first cooking region; a second sensing portion sensing whether the cooking vessel is seated on the second cooking region; and a controlling portion controlling operations of the first heating portion and the second heating portion, according to whether the first sensing portion and the second sensing portion sense whether the cooking vessel is seated on the first cooking region and the second cooking region, wherein the first sensing portion and the second sensing portion respectively output a signal with a voltage, the voltages being inversely proportional according to an area of the cooking vessel seated on the first cooking region and/or the second cooking region, characterized in that the cooking apparatus further comprising a synthesizer to combine the signals output from the first sensing portion and the second sensing portion, and to output a signal with an amplified voltage difference of the signals output from the first sensing portion and the second sensing portion to the controlling portion, wherein the controlling portion is configured to control operations of the first heating portion and the second heating portion based on the signal with the amplified voltage difference.